.aside {
  width: 300px;
  min-height: 450px;
  padding: 20px;
  background: #ffffff;
  box-shadow: 0px 0px 2px 0px rgba(0, 0, 0, 0.3);
  position: relative;
  transition: all 0.3s ease-in-out;
}
.aside:hover {
  box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.1);
}
.aside .sign {
  display: block;
  height: 100px;
  position: absolute;
  bottom: 0;
  right: 0;
  transform: rotateZ(-20deg);
}
.aside .card {
  display: block;
  width: 100%;
  margin-bottom: 20px;
}
.aside .desc {
  color: rgba(0, 0, 0, 0.6);
  font-size: 16px;
}
